Posts Tagged ‘IPv4’

Is black market for IPv4 blocks imminent?

Tuesday, August 17th, 2010

Whilst I was on holiday the IPv4 Exhaustion counter ticked down another digit to 5% or 14 /8 blocks .

Nov 16 2009 10% – dropped through 400,000,000 mark
Jan 20th 9%
Feb 25th 8%
May 10th 7%
June 2nd 6%
August 5%

Currently we seem to be using a /8 block every three weeks. With 9 blocks left before we are down to the last 5 (at which point IANA will distribute these simultaneously to the 5 Regional Internet Registries) it looks like we have 27 weeks to go to IPv4 Exhaustion.

In my book this is February 2011 and not the June date reported by the Exhaustion Counter on this blog.

(more…)

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IPv4 down to 6%

Thursday, June 3rd, 2010

I’ve been tracking the run down of the IPv4 address pool. This morning another two /8s have been allocated and the number remaining has dropped to 6% of the total.

Nov 16 2009 10% – dropped through 400,000,000 mark
Jan 20th 9%
Feb 25th 8%
May 10th 7%
June 2nd 6%

I make no comment here other than it is getting peculiarly exciting. We have effectively used up 5% of the address pool in 7 months.

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IPv6 to IPv4 tracert showing NAT

Friday, April 23rd, 2010
tracert showing IPv6 to IPv4 NAT with bbc.co.uk end destination - click to enlarge

tracert showing IPv6 to IPv4 NAT - click to enlarge

 

Adrian Kennard of AAISP gave a talk on their implementation of IPv6  at yesterday’s UK Network Operators Forum (UKNOF).  Whilst it may not be of huge interest to most readers it is worth taking a look at how the old IPv4 and new IPv6 networked worlds will talk to each other.

The picture below represents a tracert to the bbc.co.uk website.  The BBC sits on an IPv4 network.  AK is moving  AAISP exclusively to IPv6. His customers still need to be able to reach everywhere on the internet and this is done by Network Address Translation (NAT), something that most people will associate with private internal IP addresses.

The tracert clearly shows the long originating IPv6 address 2001:8b0:0:31::51bb:1ffa and the point in the network at which NAT is used to convert to IPv4, in this instance when connecting to the LONAP peering exchange. The shorter 212.58.238.129 address is the more familiar IPv4 format.

Thanks for Adrian for permission to use this.  His presentation can be found here.

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IPv4 exhaustion date is Sept 5th 2011

Wednesday, January 20th, 2010

I note that the number of available IPv4 addresses has dropped below the 10% mark. This is displayed on the counter on the right hand column of this blog but it took a link to the Number Resource Org on Facebook to alert me to the fact.

This year should see an intensification of efforts to move to the full support of IPv6. The Sept 5th 2011 date for exhaustion of the IPv4 pool is not very far away now. In reality there will still be stocks of addresses held “in private hands” so that date doesn’t see the unprepared fall off a cliff but it is a clear pressure point.

I should make it publicly known now that I’m planning a party for this date.  Anyone wanting to come along should get their name in early as I anticipate huge demand :-) .

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IPv4 drops below last 400m addresses

Monday, November 16th, 2009

I noticed over the weekend that the exhaustion counter for IPv4 dropped below 400m addresses. This is just a stake in the ground. As I write there are 653 days to go.  I’ll revisit this when it drops below 300m.

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IPv4 – the end is nigh?!

Thursday, January 22nd, 2009

The IPv4 situation is already known to geeks everywhere. This is the protocol version that has been used by IP networks everywhere since the year dot (approximately). The number of IPv4 addresses the world can use is fixed because these addresses use 4 Bytes of data. The growth in IP networks everywhere is consuming IPv4 addresses at lightning speed.

This is not new news but we are now getting very close to where the addresses run out. Fear not. We will all move onto IPv6 which uses 16Bytes per address. Timico has an allocation of 158,456,325,028,528,675,187,087,900,672 IPv6 addresses for its customers’ use – so plenty of room for growth there.

The industry isn’t quite ready to make the move yet – certainly not in Europe and North America. However the time is rapidly coming where action will have to be taken. This link to potaroo.net has a neat illustration of how much time we have left – currently 788 days according to their site. 

Another interesting site is cidr-report.org which shows you the number of discrete networks that make up the internet. As the number of these networks grow an Internet Service Provider needs to add links into each new network as it comes online. Fortunately this happens automatically.

Finally another good read is the map of the internet from xkcd.com.  There is an element of needing to understand what you are looking at but even for  the layman it looks quite interesting (I think so anyway).

The end may well be nigh but don’t worry we are not doomed!

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